How many cubic feet of cargo can an average 18 wheeler hold (in the back part of the truck)

18-Wheelers are known by many different names such as rig, semitrailer, semi, trailer truck and big rig.

A standard semi-trailer with the following dimension (see below) can hold up to 4085 cu. ft. of cargo:

length: 53'

width: 8.5'

Interior height: 9.2'

It has a maximum allowable weight with load of 80,000 lbs.; maximum cargo weight is 48,000 lbs. (24 tons) per "truckload”.

The Federal Government has enacted size regulations for CMVs (commercial motor vehicles), found on the Federal-Aid Highway Act of 1956. It explains Federal length and width requirements for certain commercial motor vehicles and where these vehicles may operate.

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